Bracketing: Hedging Your Bets [Encore Publication]: In challenging shooting conditions, exposure bracketing is a great insurance policy

In the old film days of photography, it would be days or even weeks after shooting before we could see the results.  I would routinely use a procedure called “bracketing” to make a series of shots, each at a slightly different exposure, to increase the odds that one would come out decently exposed.  Even today, when digital photography allows us to see the results immediately, there are two good reasons to employ the exposure bracketing technique: 1) it can be hard to assess on a small LCD screen in bright daylight and while in the excitement of shooting whether the exposure is really correct, and 2) when the contrast between the brighter and dimmer parts of the scene is high we may want to stitch several different exposures together using software to create a high dynamic range (HDR) image later.

Tricky subjects, like this tiny Svalbard reindeer against a glacier background, benefit greatly from exposure bracketing.  From a series of 5, 7, or even 9 images shot at slightly different exposures, you can choose the one with the correct exposure for the conditions.  Buy this photo

So there are still good reasons to use exposure bracketing, and fortunately, it is quite easy to employ this technique.  Here’s how.

If possible, mount your camera on a tripod when using bracketing so it won’t move between exposures.  Then you can combine several of the exposures into an HDR image later if desired.

If your camera has a bracketing button or menu item, use it to specify how many shots you want to take (I usually shoot 5 or 7 different exposures when bracketing) and how much you want to vary the exposure between each shot and the next (often I choose a 1-stop difference).  If your camera lacks this feature, you can still use bracketing by manually adjusting the exposure between each shot and the next; just use your camera’s exposure compensation control to dial in first -2 stops, then -1 stop, then 0, then +1 stop, and finally +2 stops.

I like to set my camera for continuous shooting while bracketing.  That way, I just hold down the remote shutter release and the camera shoots all 5 or 7 exposures in rapid succession.  But it’s fine to shoot each frame individually in single release mode, if you prefer.

There are some subtleties to think about when employing exposure bracketing.  Some cameras let you choose whether to vary the aperture, the shutter speed, or the ISO setting, while holding the other two settings constant.  In most cases, I prefer to vary the shutter speed and hold the aperture and ISO settings constant, because changing the aperture affects the images’s depth-of-field, and changing the ISO setting can affect the noise in the image.

Later, during post-processing, you review the images and choose the one that is properly exposed.  Or if the scene is very high contrast, you can use photo editing software such as Lightroom or Photoshop to stitch several frames in your series together into an HDR image, which ensures good exposure from the brightest to the darkest tones in your photo.

Several exposures were shot using bracketing and then combined in Photoshop to create this HDR  image.  All tones from the darkest shadows on the mountain walls to the brightest highlights on the icebergs and lake are properly exposed in the final image.  Buy this photo

Have you used exposure bracketing techniques?  What are your best practices?  Do you use this process mostly for selecting the best exposure or for creating HDR images?  Please share your thoughts here.

Are you interested in learning new travel photography techniques?  Follow this link to see all the posts on techniques: http://www.to-travel-hopefully.com/category/techniques/.

In the Nik of Time [Encore Publication]: Google’s Nik Collection offers leading-edge image editing tools for free

In 2012, Nik Software, a small company known for their image processing tools that emulated the look and feel of using old film, was quietly acquired by a somewhat larger company known as Google.  This past spring, Google announced they were making the entire suite of Nik tools available for free to all users.  I’m just getting around to testing this suite of image editing software now, and from what I’ve seen so far its capabilities are leading-edge and would be well worth spending hundreds of dollars to obtain.  It doesn’t do everything, but what it does, it does better than tools such as Photoshop and Lightroom, each of which costs a good deal of money.  That Nik’s great capabilities are available for download completely gratis is a wonderful gift from the folks at Google, and I strongly recommend you give them a try.

It’s important to note that the Nik Collection of software tools is not intended to be standalone image processing software.  It consists of a set of plugins, each specialized for a different specific purpose, that must be accessed by a general-purpose image editing application such as Photoshop, Lightroom, or Aperture.  I use Lightroom for nearly all of my post-processing, so I used that application to access the Nik Collection.

Once you have your general image editing application installed, then you can download the Nik Collection modules for free at this site: https://www.google.com/nikcollection/.  When you are working in your application of choice, you will then the various Nik Collection tools in the editing menus.  For example, when I select an image in Lightroom, I can access six of the seven Nik modules by pulling down the “Photo” menu and then pulling down the “Edit In” sub-menu.  One of the Nik modules, the HDR Efex tool, is accessed instead under the “File” and “Export with Preset” menu choices.

These are the seven Nik Collection modules included in the free download:

Analog Efex Pro

Explore the look and feel of classic cameras, films, and lenses.

Color Efex Pro

A comprehensive set of filters for color correction, retouching, and creative effects.

Silver Efex Pro

Master the art of black-and-white photography with darkroom-inspired controls.

Viveza

Selectively adjust the color and tonality of your images without complicated masks or selections.

HDR Efex Pro

From natural to artistic, explore the full potential of HDR photography.

Sharpener Pro

Bring out hidden details consistently with the professional’s choice for image sharpening.

Dfine

Improve your images with noise reduction tailored to your camera.

So far, I’ve played around with just three of these tools.
Silver Efex Pro did a very good job of converting my test images to monochrome.  I’m pretty good at using Lightroom’s tools to convert color images to black-and-white, but they take a lot of practice to master.  In Nik’s Silver Efex module I was able to make some good choices very quickly.  For those who want to fine-tune their black-and-white conversions, there are very good tools for detailed control over the process.
I used Nik’s Dfine module to attempt to reduce noise in a favorite shot of the Milky Way over Yosemite Valley’s Half Dome.  The results of my quick trial looked comparable to what I had done in Lightroom, but I suspect if I took the time to learn the Nik tool more thoroughly, I could end up with even better results.
Finally, I tested Nik’s HDR Efex Pro tool.  This little gem is a joy to use.  Just select the series of shots from which you want to build an HDR (High Dynamic Range) image, export them to HDR Efex, and click a couple of buttons to generate the base HRD image there.  My default image looked pretty good, but the Nik tool has a wide range of presets that allow you to generate different HDR effects with the click of a button.  I tried several of these presets until I found one that perfectly suited the scene.  A few more small tweaks using the detailed adjustment sliders, and I was ready to save the HDR image back into Lightroom.  In the past I have been very disappointed with Lightroom’s built-in HDR tools, and only slightly more satisfied with Photoshop’s HDR module, but the Nik HDR Efex Pro plugin does an amazing job.  It’s both easier to use and generates better results than the other HDR software I’ve used.  Specifically, the Nik tool does a much better job than the other tools at producing natural-looking colors and at removing the “ghosting” effects from when the underlying images are just a little bit different from one another.  Now I’m eager to find the time to go back to some of my favorite HDR images and rebuild them using the Nik software!
For comparison, here is a favorite HDR image of mine, first shown after processing in Photoshop’s HDR tools and then shown after processing in Nik’s HDR Efex Pro tools.
lrwm-lowres-5884This HDR image of Lago Grey with its glacier and the peaks of Torres del Paine National Park in Chile was processed using Photoshop’s HDR tools.  The colors appear unnaturally saturated and parts of the image (especially the tops of the mountains and the brush in the foreground) show some ghosting effects.
lrwm-lowres-5880-5884-hdrnikThis version was processed using the Nik Collection’s HDR Efex Pro tools.  The colors look much more natural and all parts of the image appear sharp and free from ghosting.
I am looking forward to revisiting many of my favorite images and reprocessing them using the Nik Collection’s tools.  I highly recommend this versatile, easy-to-use, and powerful suite of image editing modules.  And the price can’t be beat.
Have you used the Nik Collection for your own photography?  What do you like and dislike?  Please share your thoughts here.
Want to read more posts about post-processing your images?  Find them all here: Posts on Post-Processing.

Decent Exposure [Encore Publication]: Mastering exposure is key to getting great images

Of all the primary elements a photographer controls–composition, focus, the moment the shutter is released, and of course the choice of the subject–none is more critical to making a great image than setting a proper exposure.  Some corrections to a poorly exposed image can be made in post-processing, and there are occasionally good artistic reasons to override the norms of exposure in order to evoke a certain mood in an image by making it darker or brighter than usual, but before we can effectively make these exceptional choices it is necessary to learn the basics of setting an appropriate exposure.

Let’s begin by defining exposure and the elements that comprise it.  Simply put, exposure refers to the amount of light that reaches the camera’s sensor and therefore how light or dark the resulting image will appear.  Four components together determine the exposure: 1) the brightness of the light reflecting off the subject and reaching the front of the lens, 2) the aperture setting on the lens (how wide or narrow is the opening of the lens), 3) the shutter speed setting (how long is the camera’s shutter open to allow light to strike the sensor), and 4) the sensitivity setting of the camera’s sensor.  We don’t always have control over the first component, but the other three are within our control using our camera’s settings.

Many photographers simply set their camera on Auto mode and let the camera’s built-in meter make its best guess as to how the image should be exposed.  That method can work well under certain conditions, but it is highly prone to errors.  For example, if your main subject is strongly backlit, the camera’s meter will expose for the average brightness in the scene and will underexpose the subject.  This is why so often we see underexposed photos of people standing outside in bright sunlight.

Although I compensated for the strong backlighting in this image of a Tibetan family enjoying a midday picnic, their faces are still quite shadowy, indicating a bit brighter exposure would have been better still.  Buy this photo

Fortunately, there are several easy methods to achieve a correct exposure even under challenging lighting conditions.  Here are a few that I use frequently:

  1. Set the camera’s metering mode to Spot Metering: By default most cameras’ metering systems use a sophisticated pattern-matching algorithm that measures how bright or dark each area of the image is and makes its best guess about a workable exposure based on similar scenes in the camera’s database.  Most cameras allow you to select a simpler metering mode called Spot Metering, that just measures the light at the central point in the image or another point that you select.  If you choose Spot Metering and select the measuring point to be right where your main subject is, you should get just the right exposure.
  2. Dial in some exposure compensation: Most cameras let you override the meter’s exposure setting by dialing in a compensation setting to lighten or darken the image.  If your subject is backlit, you will likely want to increase the exposure by one to two stops (each “stop” of additional exposure represents a doubling of the amount of light reaching the sensor).  The camera’s display should show something like “+1 EV” to alert you that you’ve dialed in 1 extra stop of exposure, and the number changes as you change the compensation setting.  Just be sure to set the exposure compensation back to zero when you’re done using it.
  3. Go fully manual: To gain complete control over your camera’s exposure settings, choose the meter’s Manual mode.  Then you can change all three exposure elements (shutter speed, aperture, and ISO) until the image appears properly exposed when you review it on your camera’s display.
  4. Use flash to increase the lighting on your main subject: One good way to achieve proper exposure with a backlit subject is to increase lighting on the subject itself, so that there is no longer such a difference in brightness between the subject and the background.  Your camera’s built-in flash may be strong enough to pull off this trick, but it often helps to have a more powerful flash unit with you.  There are some other reasons why you may not want to use flash as a main source of light on your subject, so this method should be used sparingly.  A reflector can be used instead of flash to reflect some of the sun’s light onto the front of your subject.

For this photo shoot with a musician friend, I shot into the light so she wouldn’t have to squint into the sun and also so that we’d have a beautiful rim light from the sun around her hair.  To pull this off, I used manual mode and selected the proper exposure for her face.  I employed a reflector to bounce some sunlight back onto her face and trumpet.  [Client image not for sale.]

Similar methods can be used for other challenging lighting conditions besides backlighting.  If the subject is a brighter or darker color than the “neutral gray” your camera’s meter uses for a standard, then you need to dial in more or less exposure as appropriate.  My black cat Dragonfly, for example, requires an especially dark exposure to override the meter from thinking he’s a gray cat and choosing too bright an exposure.  Similarly, a white polar bear will need additional exposure to stop the meter from underexposing what it assumes to be a gray bear.

When photographing a black subject, reduce the exposure to compensate for the light meter’s mistaken assumption that the subject is a neutral gray color.  Buy this photo

Whatever method you use to choose your exposure, be sure to take a look at the resulting image using your camera’s monitor.  Does the main subject appear to be properly exposed, or is it still too dark or perhaps too bright?  If your camera offers a histogram display, learn how it works and use it to check your exposure in tricky lighting conditions.  I’ll write a future post specifically about the histogram, as it is a very useful and often overlooked feature.

With some attention to the exposure of your images and use of some of the techniques described here, you can achieve a correctly exposed image nearly all of the time.  After mastering the essentials of exposure, you will have more keepers and fewer images in the virtual trash can, and you can even begin to break the rules for artistic effect.

Want to see more posts on photographic techniques?  You can find them all here: Posts on Techniques.

What lighting situations do you find the trickiest?  What techniques do you use to ensure properly exposed images?  Please share your thoughts in the comments box.

In the Nik of Time [Encore Publication]: Google’s Nik Collection offers leading-edge image editing tools for free

In 2012, Nik Software, a small company known for their image processing tools that emulated the look and feel of using old film, was quietly acquired by a somewhat larger company known as Google.  This past spring, Google announced they were making the entire suite of Nik tools available for free to all users.  I’m just getting around to testing this suite of image editing software now, and from what I’ve seen so far its capabilities are leading-edge and would be well worth spending hundreds of dollars to obtain.  It doesn’t do everything, but what it does, it does better than tools such as Photoshop and Lightroom, each of which costs a good deal of money.  That Nik’s great capabilities are available for download completely gratis is a wonderful gift from the folks at Google, and I strongly recommend you give them a try.

It’s important to note that the Nik Collection of software tools is not intended to be standalone image processing software.  It consists of a set of plugins, each specialized for a different specific purpose, that must be accessed by a general-purpose image editing application such as Photoshop, Lightroom, or Aperture.  I use Lightroom for nearly all of my post-processing, so I used that application to access the Nik Collection.

Once you have your general image editing application installed, then you can download the Nik Collection modules for free at this site: https://www.google.com/nikcollection/.  When you are working in your application of choice, you will then the various Nik Collection tools in the editing menus.  For example, when I select an image in Lightroom, I can access six of the seven Nik modules by pulling down the “Photo” menu and then pulling down the “Edit In” sub-menu.  One of the Nik modules, the HDR Efex tool, is accessed instead under the “File” and “Export with Preset” menu choices.

These are the seven Nik Collection modules included in the free download:

Analog Efex Pro

Explore the look and feel of classic cameras, films, and lenses.

Color Efex Pro

A comprehensive set of filters for color correction, retouching, and creative effects.

Silver Efex Pro

Master the art of black-and-white photography with darkroom-inspired controls.

Viveza

Selectively adjust the color and tonality of your images without complicated masks or selections.

HDR Efex Pro

From natural to artistic, explore the full potential of HDR photography.

Sharpener Pro

Bring out hidden details consistently with the professional’s choice for image sharpening.

Dfine

Improve your images with noise reduction tailored to your camera.

So far, I’ve played around with just three of these tools.
Silver Efex Pro did a very good job of converting my test images to monochrome.  I’m pretty good at using Lightroom’s tools to convert color images to black-and-white, but they take a lot of practice to master.  In Nik’s Silver Efex module I was able to make some good choices very quickly.  For those who want to fine-tune their black-and-white conversions, there are very good tools for detailed control over the process.
I used Nik’s Dfine module to attempt to reduce noise in a favorite shot of the Milky Way over Yosemite Valley’s Half Dome.  The results of my quick trial looked comparable to what I had done in Lightroom, but I suspect if I took the time to learn the Nik tool more thoroughly, I could end up with even better results.
Finally, I tested Nik’s HDR Efex Pro tool.  This little gem is a joy to use.  Just select the series of shots from which you want to build an HDR (High Dynamic Range) image, export them to HDR Efex, and click a couple of buttons to generate the base HRD image there.  My default image looked pretty good, but the Nik tool has a wide range of presets that allow you to generate different HDR effects with the click of a button.  I tried several of these presets until I found one that perfectly suited the scene.  A few more small tweaks using the detailed adjustment sliders, and I was ready to save the HDR image back into Lightroom.  In the past I have been very disappointed with Lightroom’s built-in HDR tools, and only slightly more satisfied with Photoshop’s HDR module, but the Nik HDR Efex Pro plugin does an amazing job.  It’s both easier to use and generates better results than the other HDR software I’ve used.  Specifically, the Nik tool does a much better job than the other tools at producing natural-looking colors and at removing the “ghosting” effects from when the underlying images are just a little bit different from one another.  Now I’m eager to find the time to go back to some of my favorite HDR images and rebuild them using the Nik software!
For comparison, here is a favorite HDR image of mine, first shown after processing in Photoshop’s HDR tools and then shown after processing in Nik’s HDR Efex Pro tools.
lrwm-lowres-5884This HDR image of Lago Grey with its glacier and the peaks of Torres del Paine National Park in Chile was processed using Photoshop’s HDR tools.  The colors appear unnaturally saturated and parts of the image (especially the tops of the mountains and the brush in the foreground) show some ghosting effects.
lrwm-lowres-5880-5884-hdrnikThis version was processed using the Nik Collection’s HDR Efex Pro tools.  The colors look much more natural and all parts of the image appear sharp and free from ghosting.
I am looking forward to revisiting many of my favorite images and reprocessing them using the Nik Collection’s tools.  I highly recommend this versatile, easy-to-use, and powerful suite of image editing modules.  And the price can’t be beat.
Have you used the Nik Collection for your own photography?  What do you like and dislike?  Please share your thoughts here.
Want to read more posts about post-processing your images?  Find them all here: Posts on Post-Processing.

Bracketing: Hedging Your Bets [Encore Publication]: In challenging shooting conditions, exposure bracketing is a great insurance policy

In the old film days of photography, it would be days or even weeks after shooting before we could see the results.  I would routinely use a procedure called “bracketing” to make a series of shots, each at a slightly different exposure, to increase the odds that one would come out decently exposed.  Even today, when digital photography allows us to see the results immediately, there are two good reasons to employ the exposure bracketing technique: 1) it can be hard to assess on a small LCD screen in bright daylight and while in the excitement of shooting whether the exposure is really correct, and 2) when the contrast between the brighter and dimmer parts of the scene is high we may want to stitch several different exposures together using software to create a high dynamic range (HDR) image later.

Tricky subjects, like this tiny Svalbard reindeer against a glacier background, benefit greatly from exposure bracketing.  From a series of 5, 7, or even 9 images shot at slightly different exposures, you can choose the one with the correct exposure for the conditions.  Buy this photo

So there are still good reasons to use exposure bracketing, and fortunately, it is quite easy to employ this technique.  Here’s how.

If possible, mount your camera on a tripod when using bracketing so it won’t move between exposures.  Then you can combine several of the exposures into an HDR image later if desired.

If your camera has a bracketing button or menu item, use it to specify how many shots you want to take (I usually shoot 5 or 7 different exposures when bracketing) and how much you want to vary the exposure between each shot and the next (often I choose a 1-stop difference).  If your camera lacks this feature, you can still use bracketing by manually adjusting the exposure between each shot and the next; just use your camera’s exposure compensation control to dial in first -2 stops, then -1 stop, then 0, then +1 stop, and finally +2 stops.

I like to set my camera for continuous shooting while bracketing.  That way, I just hold down the remote shutter release and the camera shoots all 5 or 7 exposures in rapid succession.  But it’s fine to shoot each frame individually in single release mode, if you prefer.

There are some subtleties to think about when employing exposure bracketing.  Some cameras let you choose whether to vary the aperture, the shutter speed, or the ISO setting, while holding the other two settings constant.  In most cases, I prefer to vary the shutter speed and hold the aperture and ISO settings constant, because changing the aperture affects the images’s depth-of-field, and changing the ISO setting can affect the noise in the image.

Later, during post-processing, you review the images and choose the one that is properly exposed.  Or if the scene is very high contrast, you can use photo editing software such as Lightroom or Photoshop to stitch several frames in your series together into an HDR image, which ensures good exposure from the brightest to the darkest tones in your photo.

Several exposures were shot using bracketing and then combined in Photoshop to create this HDR  image.  All tones from the darkest shadows on the mountain walls to the brightest highlights on the icebergs and lake are properly exposed in the final image.  Buy this photo

Have you used exposure bracketing techniques?  What are your best practices?  Do you use this process mostly for selecting the best exposure or for creating HDR images?  Please share your thoughts here.

Are you interested in learning new travel photography techniques?  Follow this link to see all the posts on techniques: http://www.to-travel-hopefully.com/category/techniques/.

In the Nik of Time: Google’s Nik Collection offers leading-edge image editing tools for free

In 2012, Nik Software, a small company known for their image processing tools that emulated the look and feel of using old film, was quietly acquired by a somewhat larger company known as Google.  This past spring, Google announced they were making the entire suite of Nik tools available for free to all users.  I’m just getting around to testing this suite of image editing software now, and from what I’ve seen so far its capabilities are leading-edge and would be well worth spending hundreds of dollars to obtain.  It doesn’t do everything, but what it does, it does better than tools such as Photoshop and Lightroom, each of which costs a good deal of money.  That Nik’s great capabilities are available for download completely gratis is a wonderful gift from the folks at Google, and I strongly recommend you give them a try.

It’s important to note that the Nik Collection of software tools is not intended to be standalone image processing software.  It consists of a set of plugins, each specialized for a different specific purpose, that must be accessed by a general-purpose image editing application such as Photoshop, Lightroom, or Aperture.  I use Lightroom for nearly all of my post-processing, so I used that application to access the Nik Collection.

Once you have your general image editing application installed, then you can download the Nik Collection modules for free at this site: https://www.google.com/nikcollection/.  When you are working in your application of choice, you will then the various Nik Collection tools in the editing menus.  For example, when I select an image in Lightroom, I can access six of the seven Nik modules by pulling down the “Photo” menu and then pulling down the “Edit In” sub-menu.  One of the Nik modules, the HDR Efex tool, is accessed instead under the “File” and “Export with Preset” menu choices.

These are the seven Nik Collection modules included in the free download:

Analog Efex Pro

Explore the look and feel of classic cameras, films, and lenses.

Color Efex Pro

A comprehensive set of filters for color correction, retouching, and creative effects.

Silver Efex Pro

Master the art of black-and-white photography with darkroom-inspired controls.

Viveza

Selectively adjust the color and tonality of your images without complicated masks or selections.

HDR Efex Pro

From natural to artistic, explore the full potential of HDR photography.

Sharpener Pro

Bring out hidden details consistently with the professional’s choice for image sharpening.

Dfine

Improve your images with noise reduction tailored to your camera.

So far, I’ve played around with just three of these tools.
Silver Efex Pro did a very good job of converting my test images to monochrome.  I’m pretty good at using Lightroom’s tools to convert color images to black-and-white, but they take a lot of practice to master.  In Nik’s Silver Efex module I was able to make some good choices very quickly.  For those who want to fine-tune their black-and-white conversions, there are very good tools for detailed control over the process.
I used Nik’s Dfine module to attempt to reduce noise in a favorite shot of the Milky Way over Yosemite Valley’s Half Dome.  The results of my quick trial looked comparable to what I had done in Lightroom, but I suspect if I took the time to learn the Nik tool more thoroughly, I could end up with even better results.
Finally, I tested Nik’s HDR Efex Pro tool.  This little gem is a joy to use.  Just select the series of shots from which you want to build an HDR (High Dynamic Range) image, export them to HDR Efex, and click a couple of buttons to generate the base HRD image there.  My default image looked pretty good, but the Nik tool has a wide range of presets that allow you to generate different HDR effects with the click of a button.  I tried several of these presets until I found one that perfectly suited the scene.  A few more small tweaks using the detailed adjustment sliders, and I was ready to save the HDR image back into Lightroom.  In the past I have been very disappointed with Lightroom’s built-in HDR tools, and only slightly more satisfied with Photoshop’s HDR module, but the Nik HDR Efex Pro plugin does an amazing job.  It’s both easier to use and generates better results than the other HDR software I’ve used.  Specifically, the Nik tool does a much better job than the other tools at producing natural-looking colors and at removing the “ghosting” effects from when the underlying images are just a little bit different from one another.  Now I’m eager to find the time to go back to some of my favorite HDR images and rebuild them using the Nik software!
For comparison, here is a favorite HDR image of mine, first shown after processing in Photoshop’s HDR tools and then shown after processing in Nik’s HDR Efex Pro tools.
lrwm-lowres-5884This HDR image of Lago Grey with its glacier and the peaks of Torres del Paine National Park in Chile was processed using Photoshop’s HDR tools.  The colors appear unnaturally saturated and parts of the image (especially the tops of the mountains and the brush in the foreground) show some ghosting effects.
lrwm-lowres-5880-5884-hdrnikThis version was processed using the Nik Collection’s HDR Efex Pro tools.  The colors look much more natural and all parts of the image appear sharp and free from ghosting.
I am looking forward to revisiting many of my favorite images and reprocessing them using the Nik Collection’s tools.  I highly recommend this versatile, easy-to-use, and powerful suite of image editing modules.  And the price can’t be beat.
Have you used the Nik Collection for your own photography?  What do you like and dislike?  Please share your thoughts here.

Decent Exposure [Encore Publication]: Mastering exposure is key to getting great images

Of all the primary elements a photographer controls–composition, focus, the moment the shutter is released, and of course the choice of the subject–none is more critical to making a great image than setting a proper exposure.  Some corrections to a poorly exposed image can be made in post-processing, and there are occasionally good artistic reasons to override the norms of exposure in order to evoke a certain mood in an image by making it darker or brighter than usual, but before we can effectively make these exceptional choices it is necessary to learn the basics of setting an appropriate exposure.

Let’s begin by defining exposure and the elements that comprise it.  Simply put, exposure refers to the amount of light that reaches the camera’s sensor and therefore how light or dark the resulting image will appear.  Four components together determine the exposure: 1) the brightness of the light reflecting off the subject and reaching the front of the lens, 2) the aperture setting on the lens (how wide or narrow is the opening of the lens), 3) the shutter speed setting (how long is the camera’s shutter open to allow light to strike the sensor), and 4) the sensitivity setting of the camera’s sensor.  We don’t always have control over the first component, but the other three are within our control using our camera’s settings.

Many photographers simply set their camera on Auto mode and let the camera’s built-in meter make its best guess as to how the image should be exposed.  That method can work well under certain conditions, but it is highly prone to errors.  For example, if your main subject is strongly backlit, the camera’s meter will expose for the average brightness in the scene and will underexpose the subject.  This is why so often we see underexposed photos of people standing outside in bright sunlight.

Although I compensated for the strong backlighting in this image of a Tibetan family enjoying a midday picnic, their faces are still quite shadowy, indicating a bit brighter exposure would have been better still.  Buy this photo

Fortunately, there are several easy methods to achieve a correct exposure even under challenging lighting conditions.  Here are a few that I use frequently:

  1. Set the camera’s metering mode to Spot Metering: By default most cameras’ metering systems use a sophisticated pattern-matching algorithm that measures how bright or dark each area of the image is and makes its best guess about a workable exposure based on similar scenes in the camera’s database.  Most cameras allow you to select a simpler metering mode called Spot Metering, that just measures the light at the central point in the image or another point that you select.  If you choose Spot Metering and select the measuring point to be right where your main subject is, you should get just the right exposure.
  2. Dial in some exposure compensation: Most cameras let you override the meter’s exposure setting by dialing in a compensation setting to lighten or darken the image.  If your subject is backlit, you will likely want to increase the exposure by one to two stops (each “stop” of additional exposure represents a doubling of the amount of light reaching the sensor).  The camera’s display should show something like “+1 EV” to alert you that you’ve dialed in 1 extra stop of exposure, and the number changes as you change the compensation setting.  Just be sure to set the exposure compensation back to zero when you’re done using it.
  3. Go fully manual: To gain complete control over your camera’s exposure settings, choose the meter’s Manual mode.  Then you can change all three exposure elements (shutter speed, aperture, and ISO) until the image appears properly exposed when you review it on your camera’s display.
  4. Use flash to increase the lighting on your main subject: One good way to achieve proper exposure with a backlit subject is to increase lighting on the subject itself, so that there is no longer such a difference in brightness between the subject and the background.  Your camera’s built-in flash may be strong enough to pull off this trick, but it often helps to have a more powerful flash unit with you.  There are some other reasons why you may not want to use flash as a main source of light on your subject, so this method should be used sparingly.  A reflector can be used instead of flash to reflect some of the sun’s light onto the front of your subject.

For this photo shoot with a musician friend, I shot into the light so she wouldn’t have to squint into the sun and also so that we’d have a beautiful rim light from the sun around her hair.  To pull this off, I used manual mode and selected the proper exposure for her face.  I employed a reflector to bounce some sunlight back onto her face and trumpet.  [Client image not for sale.]

Similar methods can be used for other challenging lighting conditions besides backlighting.  If the subject is a brighter or darker color than the “neutral gray” your camera’s meter uses for a standard, then you need to dial in more or less exposure as appropriate.  My black cat Dragonfly, for example, requires an especially dark exposure to override the meter from thinking he’s a gray cat and choosing too bright an exposure.  Similarly, a white polar bear will need additional exposure to stop the meter from underexposing what it assumes to be a gray bear.

When photographing a black subject, reduce the exposure to compensate for the light meter’s mistaken assumption that the subject is a neutral gray color.  Buy this photo

Whatever method you use to choose your exposure, be sure to take a look at the resulting image using your camera’s monitor.  Does the main subject appear to be properly exposed, or is it still too dark or perhaps too bright?  If your camera offers a histogram display, learn how it works and use it to check your exposure in tricky lighting conditions.  I’ll write a future post specifically about the histogram, as it is a very useful and often overlooked feature.

With some attention to the exposure of your images and use of some of the techniques described here, you can achieve a correctly exposed image nearly all of the time.  After mastering the essentials of exposure, you will have more keepers and fewer images in the virtual trash can, and you can even begin to break the rules for artistic effect.

Want to see more posts on photographic techniques?  You can find them all here: Posts on Techniques.

What lighting situations do you find the trickiest?  What techniques do you use to ensure properly exposed images?  Please share your thoughts in the comments box.

Decent Exposure: Mastering exposure is key to getting great images

Of all the primary elements a photographer controls–composition, focus, the moment the shutter is released, and of course the choice of the subject–none is more critical to making a great image than setting a proper exposure.  Some corrections to a poorly exposed image can be made in post-processing, and there are occasionally good artistic reasons to override the norms of exposure in order to evoke a certain mood in an image by making it darker or brighter than usual, but before we can effectively make these exceptional choices it is necessary to learn the basics of setting an appropriate exposure.

Let’s begin by defining exposure and the elements that comprise it.  Simply put, exposure refers to the amount of light that reaches the camera’s sensor and therefore how light or dark the resulting image will appear.  Four components together determine the exposure: 1) the brightness of the light reflecting off the subject and reaching the front of the lens, 2) the aperture setting on the lens (how wide or narrow is the opening of the lens), 3) the shutter speed setting (how long is the camera’s shutter open to allow light to strike the sensor), and 4) the sensitivity setting of the camera’s sensor.  We don’t always have control over the first component, but the other three are within our control using our camera’s settings.

Many photographers simply set their camera on Auto mode and let the camera’s built-in meter make its best guess as to how the image should be exposed.  That method can work well under certain conditions, but it is highly prone to errors.  For example, if your main subject is strongly backlit, the camera’s meter will expose for the average brightness in the scene and will underexpose the subject.  This is why so often we see underexposed photos of people standing outside in bright sunlight.

Although I compensated for the strong backlighting in this image of a Tibetan family enjoying a midday picnic, their faces are still quite shadowy, indicating a bit brighter exposure would have been better still.  Buy this photo

Fortunately, there are several easy methods to achieve a correct exposure even under challenging lighting conditions.  Here are a few that I use frequently:

  1. Set the camera’s metering mode to Spot Metering: By default most cameras’ metering systems use a sophisticated pattern-matching algorithm that measures how bright or dark each area of the image is and makes its best guess about a workable exposure based on similar scenes in the camera’s database.  Most cameras allow you to select a simpler metering mode called Spot Metering, that just measures the light at the central point in the image or another point that you select.  If you choose Spot Metering and select the measuring point to be right where your main subject is, you should get just the right exposure.
  2. Dial in some exposure compensation: Most cameras let you override the meter’s exposure setting by dialing in a compensation setting to lighten or darken the image.  If your subject is backlit, you will likely want to increase the exposure by one to two stops (each “stop” of additional exposure represents a doubling of the amount of light reaching the sensor).  The camera’s display should show something like “+1 EV” to alert you that you’ve dialed in 1 extra stop of exposure, and the number changes as you change the compensation setting.  Just be sure to set the exposure compensation back to zero when you’re done using it.
  3. Go fully manual: To gain complete control over your camera’s exposure settings, choose the meter’s Manual mode.  Then you can change all three exposure elements (shutter speed, aperture, and ISO) until the image appears properly exposed when you review it on your camera’s display.
  4. Use flash to increase the lighting on your main subject: One good way to achieve proper exposure with a backlit subject is to increase lighting on the subject itself, so that there is no longer such a difference in brightness between the subject and the background.  Your camera’s built-in flash may be strong enough to pull off this trick, but it often helps to have a more powerful flash unit with you.  There are some other reasons why you may not want to use flash as a main source of light on your subject, so this method should be used sparingly.  A reflector can be used instead of flash to reflect some of the sun’s light onto the front of your subject.

For this photo shoot with a musician friend, I shot into the light so she wouldn’t have to squint into the sun and also so that we’d have a beautiful rim light from the sun around her hair.  To pull this off, I used manual mode and selected the proper exposure for her face.  I employed a reflector to bounce some sunlight back onto her face and trumpet.  [Client image not for sale.]

Similar methods can be used for other challenging lighting conditions besides backlighting.  If the subject is a brighter or darker color than the “neutral gray” your camera’s meter uses for a standard, then you need to dial in more or less exposure as appropriate.  My black cat Dragonfly, for example, requires an especially dark exposure to override the meter from thinking he’s a gray cat and choosing too bright an exposure.  Similarly, a white polar bear will need additional exposure to stop the meter from underexposing what it assumes to be a gray bear.

When photographing a black subject, reduce the exposure to compensate for the light meter’s mistaken assumption that the subject is a neutral gray color.  Buy this photo

Whatever method you use to choose your exposure, be sure to take a look at the resulting image using your camera’s monitor.  Does the main subject appear to be properly exposed, or is it still too dark or perhaps too bright?  If your camera offers a histogram display, learn how it works and use it to check your exposure in tricky lighting conditions.  I’ll write a future post specifically about the histogram, as it is a very useful and often overlooked feature.

With some attention to the exposure of your images and use of some of the techniques described here, you can achieve a correctly exposed image nearly all of the time.  After mastering the essentials of exposure, you will have more keepers and fewer images in the virtual trash can, and you can even begin to break the rules for artistic effect.

Want to see more posts on photographic techniques?  You can find them all here: Posts on Techniques.

What lighting situations do you find the trickiest?  What techniques do you use to ensure properly exposed images?  Please share your thoughts in the comments box.